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1.
J Neurol ; 2024 Jul 09.
Artigo em Inglês | MEDLINE | ID: mdl-38981871

RESUMO

BACKGROUND: Anti leucine-rich, glioma inactivated 1 (LGI1) antibody-associated autoimmune encephalitis (AE) is the second most common AE, where the trafficking and recycling of the pathogenic immunoglobulin (IgG) can be controlled by the neonatal crystallizable fragment receptor (FcRn), making the latter as a candidate therapeutic target. Efgartigimod is an antagonist of FcRn, its ability to increase the degradation of IgGs and improve the health and quality of life of patients. ADAPT trail indicated its rapid efficacy and safety on myasthenia gravis. However, there is currently no case reported using efgartigimod for the treatment of anti-LGI1-associated AE. CASE DESCRIPTION: The patient presented with five episodes of generalized tonic-clonic seizures in the past 2 weeks. The patient had no abnormal signs on magnetic resonance imaging. Electroencephalogram examinations showed an increase in bilateral symmetric or asymmetric slow activity, without any clear epileptic waves. The cerebrospinal fluid (CSF) examination results indicated a slight increase in protein (47 mg/dL). The anti-LGI1 antibody titer in serum was 1:100 and that in CSF was 1:3.2. The treatment with intravenous methylprednisolone 1000 mg once a day combined with levetiracetam tablets failed to completely control the patient's seizures. Thus, 10 mg/kg efgartigimod was administered intravenously once a week for 2 weeks. After 2 weeks of treatment, serum levels of anti-LGI1 antibody and IgG decreased and the patient's epilepsy did not recur in the next 3 months. CONCLUSIONS: This is the first case report of using efgartigimod to treat anti-LGI1-associated AE. The combination of efgartigimod and methylprednisolone resulted in favorable outcomes, indicating that this is an optional treatment plan.

2.
Oral Dis ; 2024 Jan 02.
Artigo em Inglês | MEDLINE | ID: mdl-38168877

RESUMO

OBJECTIVES: The pathogenesis of temporomandibular joint osteoarthritis (TMJOA) remains not fully understood. Our previous studies demonstrated that miR-21-5p may participate in the TMJOA development and the interaction between circRNA-ACAP2 (CircACAP2) and miR-21-5p. Our present study aimed to explore the biological functions and regulatory mechanisms of CircACAP2 in TMJOA. MATERIALS AND METHODS: The differential expression pattern of CircACAP2 in OA and normal tissues or cells was detected. CircACAP2 biological functions experiments were performed in chondrocytes by overexpression and interference techniques. The interaction of CircACAP2 with miR-21-5p and downstream target mRNA, polymorphic adenoma gene 1 (PLAG1), was predicted by bioinformatic databases and then demonstrated by dual-luciferase reporter assay. The biological role of CircACAP2 in TMJOA was investigated and validated in a mouse model. RESULTS: The expression level of CircACAP2 was markedly reduced in OA cartilage and directly related to chondrocyte proliferation and apoptosis as well as ECM metabolism in the cartilage. CircACAP2 functioned in chondrocytes via targeting miR-21-5p and PLAG1. Overexpressing of CircACAP2 alleviated TMJOA in mouse models. CONCLUSIONS: The present study unveiled that CircACAP2/miR-21-5p/PLAG1 axis may play an important regulatory role in TMJOA progression, which may highlight a potentially effective intervention and therapeutic strategy for the treatment of TMJOA.

4.
Zhonghua Nan Ke Xue ; 29(1): 49-53, 2023 Jan.
Artigo em Chinês | MEDLINE | ID: mdl-37846832

RESUMO

OBJECTIVE: To summarize the clinical experience in the treatment of sexual intercourse-related hematuria in males using biopsy forceps, electrocoagulation and holmium laser cauterization. METHODS: From July 2018 to April 2022, we treated 11 male patients with intercourse-related hematuria using biopsy forceps, electrocoagulation and holmium laser cauterization. The patients ranged in age from 29 to 47 years, with clinical manifestations of gross hematuria, blood dripping from the urethral orifice or blood clots in the urine after sexual intercourse or erection, 3 with hemospermia, but none with pain. All the patients received urological imaging examination to exclude lesions in the upper urinary tract and bladder preoperatively. During the operation, varicose vessels were found around the posterior urethral verumontanum under the cystourethroscope in all the cases, 5 with active bleeding in the posterior varicose vessel. The 3 cases with hemospermia first underwent trans-prostatic utricle seminal vesiculoscopy. According to the range and number of varicose vessels, 5 of the patients were treated by electrocoagulation with the resectoscope, 2 by holmium laser cauterization and the other 4 with biopsy forceps to destroy the vascular tissue. After the operation, urinary catheters were retained for 3-7 days, abstinence lasted 30 days, and the patients were followed up for 6 months. RESULTS: The operations were successfully completed in all the cases, 10 with good prognosis and none with recurrence. Occasional postoperative hematuria and blood clots in the urine were observed in 1 of the patients treated by electrocoagulation under the resectoscope, with dysuria at 3 months after operation, who underwent repeated electrocoagulation and experienced no more recurrence thereafter. Different degrees of postoperative urethral irritation and gross hematuria were found in all the cases, which spontaneously disappeared within 1-4 weeks, with no such complications as ED, ejaculation pain, ejaculation difficulty and ejaculation weakness. CONCLUSION: In the absence of other genitourinary diseases, painless hematuria, blood clots in the urine or even dysuria in males after sexual intercourse can be considered as the results of possible varicose veins around the posterior urethral verumontanum, which can be treated satisfactorily by destroying the vascular tissue with biopsy forceps, electrocoagulation with the resectoscope or holmium laser cauterization according to the location, number and degree of varicose veins.


Assuntos
Hemospermia , Trombose , Varizes , Humanos , Masculino , Adulto , Pessoa de Meia-Idade , Hemospermia/etiologia , Coito , Hematúria/etiologia , Disuria/complicações , Varizes/complicações , Trombose/complicações , Dor
5.
Mol Plant ; 16(10): 1661-1677, 2023 10 02.
Artigo em Inglês | MEDLINE | ID: mdl-37674316

RESUMO

Crop yield plays a critical role in global food security. For optimal plant growth and maximal crop yields, nutrients must be balanced. However, the potential significance of balanced nitrogen-iron (N-Fe) for improving crop yield and nitrogen use efficiency (NUE) has not previously been addressed. Here, we show that balanced N-Fe sufficiency significantly increases tiller number and boosts yield and NUE in rice and wheat. NIN-like protein 4 (OsNLP4) plays a pivotal role in maintaining the N-Fe balance by coordinately regulating the expression of multiple genes involved in N and Fe metabolism and signaling. OsNLP4 also suppresses OsD3 expression and strigolactone (SL) signaling, thereby promoting tillering. Balanced N-Fe sufficiency promotes the nuclear localization of OsNLP4 by reducing H2O2 levels, reinforcing the functions of OsNLP4. Interestingly, we found that OsNLP4 upregulates the expression of a set of H2O2-scavenging genes to promote its own accumulation in the nucleus. Furthermore, we demonstrated that foliar spraying of balanced N-Fe fertilizer at the tillering stage can effectively increase tiller number, yield, and NUE of both rice and wheat in the field. Collectively, these findings reveal the previously unrecognized effects of N-Fe balance on grain yield and NUE as well as the molecular mechanism by which the OsNLP4-OsD3 module integrates N-Fe nutrient signals to downregulate SL signaling and thereby promote rice tillering. Our study sheds light on how N-Fe nutrient signals modulate rice tillering and provide potential innovative approaches that improve crop yield with reduced N fertilizer input for benefitting sustainable agriculture worldwide.


Assuntos
Nitrogênio , Oryza , Nitrogênio/metabolismo , Fertilizantes , Peróxido de Hidrogênio/metabolismo , Grão Comestível/metabolismo , Agricultura , Oryza/metabolismo
6.
Tech Coloproctol ; 27(10): 799-811, 2023 10.
Artigo em Inglês | MEDLINE | ID: mdl-37634164

RESUMO

PURPOSE: This study used a network meta-analysis to evaluate the efficacy and safety of different surgical approaches in patients with hemorrhoids. METHODS: PubMed, Embase, Web of science, and Cochrane Library were searched for randomized controlled trials on patients with hemorrhoids treated by different surgical procedures. The search was conducted until January 15, 2023. Two investigators independently screened the resulting literature, extracted information, evaluated the risk of bias of the included studies, and performed a network meta-analysis. RESULT: A total of 23 randomized controlled studies were included and involved 3573 patients and 10 interventions, namely L (Ligasure), M-M (Milligan-Morgan), F (Ferguson), H (Harmonic), OH (open Harmonic), CH (closed Harmonic), PPH (procedure for prolapse and hemorrhoids), TST (tissue selecting technique), T-S (TST STARE+; tissue selection therapy stapled transanal rectal resection plus), and STARR (stapled transanal rectal resection). Network meta-analysis results showed that L has the shortest mean operating time and STARR has the longest mean operating time, F and H have the longest length of hospitalization and T-S has the shortest length of hospitalization, PPH has the most intraoperative blood loss and L has the least intraoperative blood loss, TST has the shortest time to first defecation and M-M has the longest time to first defecation, STARR had the least recurrence and PPH had the most recurrence, PPH had the least anal stenosis and L had the most anal stenosis, and F had the least postoperative pain after 24 h and PPH had the most postoperative pain after 24 h. CONCLUSION: Current evidence suggests that L is best at reducing mean operative time and intraoperative bleeding, T-S is best at reducing mean length of stay, TST has the shortest time to first defecation, STARR is best at reducing recurrence rates, PPH is best at reducing postoperative anal stricture, and F is best at reducing postoperative pain after 24 h.


Assuntos
Malformações Anorretais , Hemorroidas , Humanos , Hemorroidas/cirurgia , Perda Sanguínea Cirúrgica/prevenção & controle , Constrição Patológica , Metanálise em Rede , Dor Pós-Operatória/etiologia
7.
Shanghai Kou Qiang Yi Xue ; 32(2): 166-171, 2023 Apr.
Artigo em Chinês | MEDLINE | ID: mdl-37153998

RESUMO

PURPOSE: To evaluate the efficacy of Nd:YAG laser treatment for venous malformations. METHODS: Eighty patients with oral mucosal venous malformations underwent one or more Nd:YAG laser treatments, and photographs of the lesions before and after laser treatment were collected and compared, patients' satisfaction were assessed using visual analog scale (VAS). SPSS 22.0 software package was used for data analysis. RESULTS: A total of 58 cases were cured in 80 patients, 21 cases showed remarkable improvement. Nine patients(11.25%) experienced adverse effects after laser therapy, including atrophic scars in 2 patients, oral mucosal ulcers in 4 patients, transient hyperpigmentation in 2 patients, and transient hypopigmentation in 1 patient, which met the expected response to effective therapy, and the follow-up results showed that most patients achieved maximum satisfaction values. CONCLUSIONS: Nd:YAG laser is an effective and safe treatment for oral mucosal venous malformation with definite efficacy and few side effects, which is worthy of popularization and application.


Assuntos
Terapia a Laser , Lasers de Estado Sólido , Terapia com Luz de Baixa Intensidade , Humanos , Lasers de Estado Sólido/efeitos adversos , Resultado do Tratamento , Satisfação do Paciente , Terapia a Laser/efeitos adversos
8.
Chin Med ; 18(1): 44, 2023 Apr 23.
Artigo em Inglês | MEDLINE | ID: mdl-37088809

RESUMO

BACKGROUND: Taohong Siwu Decoction (THSWD) is a prescription which included in the "List of Ancient Classic Prescriptions (First Batch)" issued by the National Administration of Traditional Chinese Medicine (TCM) and the National Medical Products Administration of the People's Republic of China. THSWD is effective and widely applied clinically for many diseases caused by blood deficiency and stasis syndrome in TCM, such as primary dysmenorrhea, menopausal syndrome, coronary heart disease, angina pectoris, and diabetes. METHODS: The TCM model of blood deficiency and blood stasis syndrome was prepared by ice water bath combined with cyclophosphamide, and the rats were randomly divided into control group, blood deficiency, and blood stasis model group, positive group, and THSWD treatment group. Pharmacodynamics measured the blood routine, blood coagulation, and other related indexes in rats. UHPLC-MS technology was used to analyze the changes in the fingerprints of metabolites in the plasma of rats with blood deficiency and blood stasis syndrome, and combined with mass spectrometry information and public database retrieval, to find potential biomarkers for screening metabolites. At the same time, 16S rDNA sequencing technology was used to identify intestinal flora, and statistical analysis was used to find differences in strain diversity between groups. RESULTS: THSWD administration can significantly improve the physical signs, blood routine, and hematopoietic factors caused by the blood deficiency and blood stasis syndrome model, and improve the symptoms of blood deficiency. The results of the general pharmacological studies showed THSWD groups improved changes in blood plasma viscosity and coagulation-related factors caused by modeling, and improved coagulation function significantly. The metabolomic analysis found that compared to the model group, THSWD exerted better effects on ß-alanine, taurine, L-tyrosine, L-arginine, Eugenol, sodium deoxycholate, and deethylatrazine. Twenty-three potential differential metabolites showed intervention effects, mainly involved in eight metabolic pathways, including amino acid metabolism, taurine and hypotaurine metabolism, vitamin metabolism, and nucleotide metabolism. Gut microbiota data showed that, compared to the control group, the relative abundance and value of Firmicutes and Bacteroidota of the blood deficiency and blood stasis model group was significantly reduced, while the relative abundance of Actinobacteria, Spirochaetota, Proteobacteria, Campilobacterota, and other pathogenic bacteria was significantly increased. Following THSWD intervention, the abundance of beneficial bacteria increased, and the abundance of pathogenic bacteria decreased. Correlation analysis between the gut microbiota and differential metabolites showed that the two are closely related. THSWD affected the host blood system through mutual adjustment of these two factors, and improved blood deficiency and blood stasis syndrome in rats. CONCLUSION: The blood deficiency and blood stasis syndrome model of TCM disease caused by ice bath combined with cyclophosphamide lead to changes in the pharmacology, metabolomics, and gut microbiota. The intervention of THSWD can improve the symptoms caused by blood deficiency and blood stasis. The mechanism is mainly through the regulation of platelet function and amino acid metabolism.

9.
Food Chem ; 412: 135512, 2023 Jun 30.
Artigo em Inglês | MEDLINE | ID: mdl-36731234

RESUMO

Phytosterols have health benefits; however, they are partially removed during the bleaching of corn oil. We evaluated the chemical conversion of free phytosterols (FPs) during bleaching. FP degradation accelerated with increased time and temperature, following a first-order kinetic model. In the n-heptane system, air and activated clay promoted the chemical conversion of the FPs. Sterenes formation was analysed under different conditions using a zero-order kinetic model. The apparent activation energies revealed sterene formation decreasing in the following order: campesta-3,5-diene ≈ stigmasta-3,5,22-triene > stigmasta-3,5-diene. Isomers of the above were not detected, indicating that these sterenes were the only primary products of FPs. The desorption test indicated that the FP loss from corn oil was not only due to FPs being adsorbed the activated clay, but also FPs adsorbed at acidic activated sites being degraded. This study presents a vital scientific foundation for retaining FPs to develop healthier and more nutritious oils.


Assuntos
Anti-Infecciosos , Fitosteróis , Fitosteróis/análise , Óleo de Milho/análise , Zea mays , Argila , Óleos
10.
Cells Tissues Organs ; 212(2): 147-154, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-34695819

RESUMO

There is no authoritative characterization of the attributes of the hemolymph node (HLN) since Gibbes' first description in 1884. Early reports showed that HLN are found near the kidney in human and animals with the feature of numerous erythrocytes in sinuses. Subsequent studies mainly focused on anatomy and histology, such as the source, distribution, and quantity of erythrocytes in sinuses. Recent articles mentioned that the emergence of HLN was related to immunity, but there was no strong evidence to support this hypothesis. Therefore, it is still uncertain whether the HLN is an organ of anatomy, histology, or immunology. It has been found that the development of HLN could be elicited in the parathymic area by stimuli such as Escherichia coli, allogeneic breast cancer cells, and renal tissue that were injected/transplanted into the tail of rats in our pilot studies. In this study, the model of the HLN was established by transferring allogeneic renal tissue in the rat. Intrasinusoidal erythrocytes of the node were the component for producing a red macroscopic appearance, while macrophage-erythrocyte-lymphocyte rosettes were the major immunomorphological changes, reflecting the immune activity against the invasion of the allogeneic tissue within the node. Therefore, the HLN is an immunomorphological organ.


Assuntos
Hemolinfa , Linfonodos , Ratos , Humanos , Animais , Linfonodos/patologia , Rim , Transplante Homólogo , Eritrócitos
11.
Zhonghua Nan Ke Xue ; 29(5): 426-429, 2023 May.
Artigo em Chinês | MEDLINE | ID: mdl-38602759

RESUMO

OBJECTIVE: To analyze the causes of skin necrosis after penis lengthening surgery and corresponding treatment measures, and observe the clinical effect of free skin graft repair in the treatment of penile skin defects. METHODS: We retrospectively analyzed the clinical data on 12 cases of extensive penile skin necrosis and defect after penis lengthening surgery performed in our department from January 2017 to January 2022. The patients underwent free skin graft repair with medium- or full-thickness skin grafts from the thigh after wound preparation. RESULTS: The skin grafts survived well in all the 12 patients and the incisions healed in the first stage without any complications. At 6 months after surgery, skin sensation was mostly recovered in the area of penis skin grafting, no obvious skin ulceration or edema was observed, and the appearance of the penis was satisfactory. The IIEF-5 scores, Erectile Hardness Scale (EHS) scores, and the results of penile hardness tests of the patients all indicated normal erectile function. CONCLUSION: Free skin graft repair with autologous medium- or full-thickness skin grafts is a safe and effective surgical option for extensive penile skin necrosis after penis lengthening surgery.


Assuntos
Pênis , Pele , Humanos , Masculino , Necrose , Pelve , Pênis/cirurgia , Estudos Retrospectivos
12.
J Agric Food Chem ; 70(27): 8417-8429, 2022 Jul 13.
Artigo em Inglês | MEDLINE | ID: mdl-35767802

RESUMO

The formation of linolenic (Ln) and linoleic (L) acyl oxidation products during storage of flaxseed oil (FO)-in-water emulsions was monitored using proton nuclear magnetic resonance (1H NMR) spectroscopy, as well as chemical analytical methods and gas chromatography. Emulsions containing 10% FO and 1% Tween 60 were prepared by homogenization and then stored at 37 °C in the dark for 21 days under accelerated oxidation conditions (500 µmol ferrous sulfate). The induction time of the emulsions, after which rapid lipid oxidation was first observed, was 5-7 days, as shown by increases in peroxide values and hydroperoxide concentrations determined by NMR spectroscopy. Analysis of the hexanal and propanal concentrations during storage by HS-SPME-GC indicated that the oxidation of Ln and L acyls in the emulsions occurred simultaneously. The oxidation products originating from the Ln and L acyls were monitored using 1H NMR spectroscopy throughout the oxidation process. These results also showed that the Ln and L acyls oxidized simultaneously, and isomers of hydroperoxy-cyclic hydroperoxides (HCPs), Z,E-conjugated dienic hydroperoxides (ZECDHPs), and E,E-conjugated dienic hydroperoxides (EECDHPs) were the major primary oxidation products. Aldehydes were observed after 7 days, which was taken to be the start of the propagation stage, with the formation of a significant amount of oxygenated α, ß-unsaturated aldehydes (OαßUAs). Based on the concentrations of hydroperoxides originating from the Ln and L acyls, our results suggested that the loss rate of L acyls was parallel to that of Ln acyls. This result was consistent with Ln acyls adopting a tighter packing at the oil-water interface in the emulsions than L acyls. This hypothesis was supported by the NMR relaxation time data. A good correlation between the isomer concentrations of ZECDHPs and HCPs in Ln acyls and between ZECDHPs and EECDHPs in L acyls was shown, with the mole ratios between them being 1.2 and 1.1, respectively. Droplet size and microstructure analyses showed that droplet aggregation occurred from 11 days onwards, which was attributed to polar oxidation products located at the oil droplet surfaces promoting coalescence. Zeta-potential measurements indicated that the droplets became more negative during storage, which was attributed to the accumulation of anionic reaction products at the droplet surfaces.


Assuntos
Óleo de Semente do Linho , Água , Aldeídos , Emulsões/química , Peróxido de Hidrogênio/química , Espectroscopia de Ressonância Magnética , Oxirredução , Água/química
13.
Org Lett ; 24(26): 4734-4738, 2022 07 08.
Artigo em Inglês | MEDLINE | ID: mdl-35749446

RESUMO

Pocahemiketone A, a novel sesquiterpenoid possessing a unique spirocyclic skeleton with a hemiketal endoperoxide unit, was isolated from the essential oil of Pogostemon cablin. Its structure was determined by spectroscopic methods and single-crystal X-ray diffraction analyses. Pocahemiketone A exhibits a significant neuroprotective effect against Aß25-35-induced damage in SH-SY5Y cells by inhibiting NLRP3 inflammasome-mediated pyroptosis and oxidative stress. These results indicate that pocahemiketone A has great potential for use in the treatment of Alzheimer's disease.


Assuntos
Neuroblastoma , Fármacos Neuroprotetores , Sesquiterpenos , Peptídeos beta-Amiloides , Apoptose , Linhagem Celular Tumoral , Humanos , Fármacos Neuroprotetores/farmacologia , Estresse Oxidativo , Fragmentos de Peptídeos/farmacologia , Piroptose , Sesquiterpenos/farmacologia , Esqueleto
14.
Food Res Int ; 155: 111091, 2022 05.
Artigo em Inglês | MEDLINE | ID: mdl-35400464

RESUMO

Over 90% of global royal jelly (RJ), a functional food with various health benefits, is produced in China mainly by migratory beekeeping of a high RJ-producing honeybee (RJB) strain. To explore quality changes of RJ produced by migratory RJBs at different floral periods, we performed metabolomics and proteomics analysis and assessed RJ antioxidant activity. Overall, the RJ metabolic and proteomic profiles were observed to vary with floral periods. Minor sugars (raffinose, erlose, and sucrose) and major RJ protein 5 (MRJP5) were identified among the discriminating components mainly contributing to the altered profiles. Water, crude protein, and the trans-10-hydroxy-2-decenoic acid (10-HDA) content fulfill the requirements of the International Organization for Standardization regardless of floral periods. Notably, the 10-HDA content increased 11.05%-19.65% during tea blooming. Moreover, changes in antioxidants resulted in significant difference in RJ antioxidant activity. The integrated omics data provide a detailed view of chemical composition for RJ quality evaluation.


Assuntos
Criação de Abelhas , Proteômica , Animais , Antioxidantes , Abelhas , Ácidos Graxos/análise , Proteômica/métodos
15.
J Sci Food Agric ; 102(10): 4200-4209, 2022 Aug 15.
Artigo em Inglês | MEDLINE | ID: mdl-35018645

RESUMO

BACKGROUND: Because many common foods are emulsions (mayonnaise, margarine, salad dressing, etc.), a better understanding of lipid oxidation is crucial for the formulation, production, and storage of the relevant consumer products. We prepared oil-in-water (O/W) and water-in-oil (W/O) emulgels, and their architecture was characterized before monitoring lipid oxidation under thermally accelerated conditions to systematically compare the effect of emulsion type, oil composition, and oil fraction on the structure and lipid oxidation in thee biphasic emulgel systems. RESULTS: Higher susceptibility of lipids to oxidation (>2.5 times) was observed in the biphasic O/W and W/O emulgels than in soybean oil owing to an interfacial region. In the heterogeneous emulsion systems, W/O emulgels had oxidation resistance than O/W emulgels did. Compared with the oil-phase composition of high oleic sunflower, soybean, and flaxseed oils, oxidation sensitivity of emulsified lipids was significantly raised as the degree of unsaturation increased from 100.72 to 203.07. Moreover, increasing oil fraction from 75% to 85% led to an obvious increase in total oxidation in O/W emulgels but a decrease in W/O emulgels. In addition to emulsion size and oil unsaturation, viscoelasticity had a remarkable effect on the low-unsaturated oil oxidation (e.g. high oleic sunflower oil). CONCLUSION: Physical and structural phenomena played important roles in lipid oxidation based on a mass transport principle. These findings provide novel information for designing the structures of emulsion gels for controlling lipid oxidation through the cooperation of both formulation and architecture principles. © 2022 Society of Chemical Industry.


Assuntos
Óleos , Água , Emulsões/química , Géis/química , Óleos/química , Viscosidade , Água/química
16.
J Agric Food Chem ; 70(1): 309-318, 2022 Jan 12.
Artigo em Inglês | MEDLINE | ID: mdl-34958201

RESUMO

Growing interest is being dedicated to smart soft matters because of their potential in controlling bioactives upon exposure to an appropriate stimulus. Herein, structuring of edible liquid oil into oleogels and emulgels as smart thermo-triggered soft vehicles for controllable release of diverse nutrients was developed. Edible liquid oil was trapped inside the crystal network structure of phytosterols and monoglycerides resulting in bicomponent solidlike oleogels. Subsequently, both water-in-oleogel (W/O) emulgels and glycerol-in-oleogel (G/O) emulgels were further fabricated by spatial distribution of the stabilizing interfacial crystals around dispersed droplets as well as the network crystals in the continuous phase. Rheological measurements showed that the gel strength of the oleogel-based emulgels depends on the fraction of the aqueous phase and is greater than that of corresponding oleogels due to a filler effect of dispersed aqueous droplets within the crystal network, offering an additional strategy to tune the structure and rheology. Comparatively, introducing glycerol endowed a higher gel strength for the oleogel-based emulgels than water, particularly at increased filler loads. In addition, these soft matters exhibited interesting thermoresponsive nature, which exhibit the flexibility for programmed release of coencapsulated bioactive components upon exposure to an appropriate thermal triggered switchable. The resulted smart thermo-triggered soft matters have emerging opportunities for application in functional active ingredient delivery by on-demand strategies.


Assuntos
Monoglicerídeos , Fitosteróis , Glicerol , Reologia , Água
17.
Food Chem ; 370: 131030, 2022 Feb 15.
Artigo em Inglês | MEDLINE | ID: mdl-34507209

RESUMO

Phytosterols are commonly found in vegetable oils and possess health benefits for humans. While investigating the chemical conversion of stigmasterol at deodorisation temperatures, gas chromatography-mass spectrometry (GC-MS) and ultra-high performance liquid chromatography coupled to high-resolution mass spectrometry (UHPLC-HRMS) experiments led to the identification of 5-ethyl-6-methyl-3-heptene-2-one, 3-hydoxy-steroid, 3-ketostigmasterol, and 3,7-diketostigmasterol as by-products. The identification of these compounds assisted in the interpretation of the stigmasterol oligomers characterised by high-pressure size exclusion chromatography (HPSEC). A similar analysis was conducted in stripped corn oil at the deodorisation temperatures. As such, 5-ethyl-6-methyl-3-heptene-2-one, 3-hydoxy-steroid, 3-ketostigmasterol and 3,7-diketostigmasterol were also detected in stripped corn oil, while the contents of 3-hydoxy-steroid and 5-ethyl-6-methyl-3-heptene-2-one were higher than those of 3-ketostigmasterol, as revealed by quantum chemical simulations. In addition, stripped corn oil exhibited the characteristic of preventing stigmasterol degradation below 200 °C, whereas it enhanced the chemical conversion (such as esterification and degradation) of stigmasterol at higher temperatures.


Assuntos
Fitosteróis , Estigmasterol , Cromatografia Líquida de Alta Pressão , Óleo de Milho , Humanos , Óleos de Plantas , Temperatura , Zea mays
18.
Chin Med ; 16(1): 129, 2021 Dec 02.
Artigo em Inglês | MEDLINE | ID: mdl-34857023

RESUMO

The high incidence of breast cancer is the greastest threat to women' health all over the world. Among them, HER-2 positive breast cancer has the characteristics of high malignancy, easy recurrence and metastasis, and poor prognosis. Traditional Chinese medicine (TCM) has a rich theoretical basis and clinical application for breast cancer. TCM believes that blood stasis syndrome is one of the important pathogenesis of breast formation and development. Taohong Siwu Decoction (TSHWD) is based on the "First Prescription of Gynecology" Siwu Decoction. It is widely used in various blood stasis and blood deficiency syndromes, mainly in gynecological blood stasis. Clinical studies have found that THSWD can treat breast cancer by reducing blood vessel and lymphangiogenesis with auxiliary chemotherapy. In this study, we aim to explore the material basis and mechanism of THSWD in the treatment of HER-2 positive breast cancer through literature review and network pharmacology studies. Through a literature review of the traditional application, chemical composition of Chinese herbal medicine of THSWD, as well as its clinical reports and pharmacological research on breast cancer treatment. Meanwhile, we conducted "component-pathway-target" network through network pharmacology reveals the main material basis, possible targets and pathways of THSWD in inhibiting HER-2 positive breast cancer. Literature review and network pharmacology research results had predicted that, baicalein, kaempferol, caffeic acid, amygdalin, quercetin, ferulic acid, gallic acid, catalpol, hydroxysafflor yellow A, paeoniflorin in THSWD are the main effective chemical composition. THSWD regulates 386 protein targets and 166 pathways related to breast cancer. The molecular mechanism is mainly to improve the microenvironment of tumor cells, regulate the process of tumor cell EMT, and inhibit tumor cell proliferation and metastasis. This study revealed the mechanism of action of THSWD in the treatment of HER-2 positive breast cancer through literature review and network pharmacology studies, providing a scientific basis for clinical application.

19.
Food Res Int ; 150(Pt A): 110757, 2021 12.
Artigo em Inglês | MEDLINE | ID: mdl-34865775

RESUMO

Phytosterols oleogel-based flavor emulsions were successfully fabricated for the first time using natural tea saponin as emulsifier and one-pot ultrasonic technique. The effects of ultrasonic time and power, surfactant concentration, and type of flavor oils (e.g., orange, lemon and peppermint) on the emulsion droplet size were investigated. Submicron emulsions with a dispersed phase made by flavor oil (20 wt%) + phytosterol (4 wt%) were stabilized with 3 wt% saponin were obtained by applying an ultrasonic time of 5 min and ultrasonic power of 280 W. The natural tea saponin emulsions exhibited a superior stability and encapsulation efficiency of phytosterol, compared to traditional emulsifiers. Flavor oil-phytosterol enriched powders were prepared by spray-drying and characterized by SEM, XRD and repose angle. The natural saponin encapsulated oil + phytosterol powders had excellent fluidity, redispersion behavior and low phytosterol crystallinity. It was demonstrated that ultrasound is an effective and suitable technique for fabricating fortified flavor emulsions and microcapsules, which may be used for developing functional lipids-based applications in the food, beverage and cosmetic industries.


Assuntos
Fitosteróis , Saponinas , Emulsões , Óleos , Compostos Orgânicos , Pós , Ultrassom
20.
Am J Transl Res ; 13(3): 1085-1108, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33841642

RESUMO

Adenoid cystic carcinoma (AdCC) of the head and neck originates from salivary glands, with high risks of recurrence and metastasis that account for the poor prognosis of patients. The purpose of this research was to identify key genes related to AdCC for further investigation of their diagnostic and prognostic significance. In our study, the AdCC sample datasets GSE36820, GSE59702 and GSE88804 from the Gene Expression Omnibus (GEO) database were used to explore the abnormal coexpression of genes in AdCC compared with their expression in normal tissue. A total of 115 DEGs were obtained by screening with GEO2R and FunRich software. According to functional annotation analysis using Enrichr, these DEGs were mainly enriched in the SOX2, AR, SMAD and MAPK signaling pathways. A protein-protein network of the DEGs was established by the Search Tool for the Retrieval of Interacting Genes (STRING) and annotated through the WEB-based Gene SeT AnaLysis Toolkit (WebGestalt) and was shown to be enriched with proteins involved in cardiac muscle cell proliferation and extracellular matrix organization. A Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis revealed that ITGA9, LAMB1 and BAMBI were associated with the PI3K-Akt and TGF-ß pathways. Furthermore, 36 potential target miRNAs were identified by the OncomiR and miRNA Pathway Dictionary Database (miRPathDB). In conclusion, SLC22A3, FOXP2, Cdc42EP3, COL27A1, DUSP1 and HSPB8 played critical roles according to the enrichment analysis; ITGA9, LAMB1 and BAMBI were involved in significant pathways according to the KEGG analysis; ST3Gal4 is a pivotal component of the PPI network of all the DEGs obtained; SPARC, COL4A2 and PRELP were highly related to multiple malignancies in pan-cancer research; hsa-miR-29-3p, hsa-miR-132-3p and hsa-miR-708-5p were potential regulators in AdCC. The involved pathways, biological processes and miRNAs have been shown to play significant roles in the genesis, growth, invasion and metastasis of AdCC. In this study, these identified DEGs were considered to have a potential influence on AdCC but have not been studied in this disease. The analysis results promote our understanding of the molecular mechanisms and biological processes of AdCC, which might be useful for targeted therapy or diagnosis.

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